Inversion of the genomic region between the proximal defective P-element in y+ns and a region in the sc gene. The gypsy element present in the progenitor y+ns allele is still present (it is not in the inverted region).
The effect of mutations in a number of loci involved in chromosome organisation on mutagenesis in the y2nsscme double superunstable system has been analysed.
The effect of mutations in a number of loci involved in chromosome organisation on mutagenesis in the y2ns scme double superunstable system has been analysed.